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What you probably got is the Bosch Platinum+4 which you can find anywhere. Only the center electrode has a tiny platinum tip welded on. The 4 electrode plugs used by Porsche are not the same, as they are copper.
I was going to try the Platinum+4 and I talked to a mechanic at my dealer who is a PCA tech advisor. He said he has seen the tip come off and damage the engine. Then I searched on the Pelican board and there were reports from owners who said the same thing, plus the car did not run well with the +4.
So I went with what Porsche uses.
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